Vacuum-cleaner bag



mama Sept. 8, i925.

.Ol-FICE.

mm]. orm'zonn, t. w.

- vacuum-camarnae.

a nmio ma rim-bu 11, 1024. serial n. "am.

To all whom it may concern:

Be it known that I, Axum E. Hawrao, a citizen of the United States, and resident of New York, in. the county of New York'and State of New York, have invented certain new and useful Im rovements in Vacuum- Cleaner Bags, of w ich the following is a specification. 1

This invention is an improvement in bags,

and with respect to its more specific features in dust collecting bags for vacuum cleaners.

In vacuum cleaners, the sweepings are deposited in a bag connected with the outlet or delivery nozzle of the cleaner and at intervals depending upon the extent of the service of the cleaner,*the bag must be emptied. This is-a most unpleasant task, and with a view to its avoidance, the use of paper bags has been proposed.

Such bags are intended to be used until they are filled to a degree such that further use is impracticable or undesirable, when they are removed, and with their contents destroyed or otherwise disposed of, a new bag being substituted for the old.

Since this type of bag is intended to be used but once, and not to be emptied for reuse, it must be of a character such that it may be supplied to the consumer at a very low rice ut the bag must be sufiiciently dura le to withstand an extended period of service, and the usual treatment accorded to the ordinary cloth bag during such service.

Since the bags are subjected to a considerable internal ressure when in use, and are extended to t ieir full capacity, they must have strength sufiicient to withstand the pressure, and be so made, as to be capable of distension without warping, kinking or twisting, thereby to avoid undue strain on any one part of the bag.

A degree of resiliency is desirable, especially circumferentially of the bag, to lessen strain and to equalize the distension of the bag.

An object of the provision of a'bag present invention is the of paper or like cheap material capable production at a low cost, and equal to the demands in respect of durability, which will be made upon it. 7

Another object is the provision of a bag capable of smooth easy distension under internal premure along natural lines, without warp or twisting of any part.

Anot or object is the provision-of a bag having a valve of the same material as the bag, and forming a art of the bag, to prevent the'neturn of ust from'bag to nozzle when in use, and to close the communication bgfween bag and nozzle when the cleaner is 1 e.

Another object is the provision of, a simple and inexpensive means to secure the bag to the nozzle, in such manner as to prevent displacement under the pressure from the nozzle, and which may be-quickly released when it is desired to remove the bag.

With these and other objectsin view, the invention consists in the construction and novel combination of parts fully described hereinafter, illustrated in the accompanying drawings, and pointed out in the claims appended hereto, it being understood that various changes in the form, proportion, size and minor details of construction, wit in the scope of the claims, may be reso to without departing from the spirit of the invention.

In the drawings:

Fig. 1 is a side view of the improved bag in place on a vacuum cleaner.

Fig. 2 is a side view of the bag with a part of the near wall removed.

Fig, 3 is a perspective view of the means for connecting the bag neck to the nozzle. 7

Fig. 4 is a top plan view ofthe parts from which the" bag is formed. I

Fig. 5 is a side view with parts broken away, of a modified construction.

The present embodiment of the invention is shown in connection with a vacuum cleaner 1 of conventional type, the bag being connected with the outlet or nozzle 2 of the cleaner, which has the usual handle 3 for controlling the same. The bag is composed of crepe paper, the body tli'erecf being formed from two similar pieces 4 each roughly triangular in shape, having at one angle a reduced or neck portion 5.

The pieces 4 are superimposed one upon the other, and the edges, except at the neck portion are turned over upon the upper face of the upper epiece as indicated at 6. These turned over ges or hems are secured to the bodies of the pieces by stitching indicated at 7 the stitching passing through four thick nesses of the material, that is the two edges and the two bodies of the pieces. The neck. 5 is left open, to engage over the nozzle, and a valve is arranged at the neck, to prevent the return of dust from the bag to the nozzle when in use and to close the communication between the bag and nozzle when the bag is idle.

This valve as shown in Fig. 4, is formed from a piece 8 of the same material as the piece 4, the piece being roughly hexagonal. This piece is doubled upon itself, and when so doubled one end is shaped to roughly correspond with the shape of the neck when the bag is flat. The piece 8 is stitched into the neck by the stitching 7, and, it will be noticed referring to Fig. 2 that that portion of the piece 8 which projects into the bag forms two flaps which normally lie in contact or substantially so.

Referring to Fig. 4 it will be seen that the piece 8 has two parallel sides 9 and 10 two sides 11 straight, but diverging toward one end of the piece, and two concave sides 12. YVhen the valve is in place, the sides 11 are free, so that there is an uninterrupted flow from the nozzle into the bag, but a restricted flow from the bag to the nozzle, so that sweepings delivered from the nozzle into the bag cannot return.

"While the valve may be of the character just described, it may be integral with the body of the bag as shown in Fig. 4. With this arrangement the similar pieces 13 from which the bag is formed have extended neck portions 14 which are stitched together at one side as shown at 15 in the same manner as the sides of the bodies of the pieces. The other side is only stitched for a part of its length as shown at 16, the outer two thirds of the said side being left free. After the bag is completed, this extended neck portion :llillltlll'llfll, as indicated in dotted lines in With the construction of either Fig. 2 or Fig. 5 there are four thicknesses of material at the neck, that is at the part of the bag which engages about the nozzle and this neck portion is clamped to the nozzle by the fastening means shown in Fig. 3. The said means includes a length 17 of wire of suitable gage having at each end a-loop 18, the wire being of a length to extend about the bag neck when it is on the nozzle, and to lap at its ends. In order to prevent cutting of the bag neck, and to assist in sealing the neck, the wire is enclosed within a doubled strip 19 of the same material as the body of the bag. This double strip is much longer than the wire, and it is gathered, so that at each face. it presents a large number of ribs or corrugations extending transversely of the wire. Two lines oil stitching connect the opposite folds of the strip, one on each side 0 the wire, and referably the lap of the strip is in one o the lines of A fid 20 is passed through the loops, and

by means of the lid the wire may be twlsted,

to tighten the fastening means on the nozzle. One of the loops may be contracted to prevent displacement of the fid prior to the application of the fastening means or clamp. Preferably a rubber band 21 is placed about the nozzle, before the neck of the bag is placed thereon, so that the taste means or clamp is tightened on the ban This prevents slipping of the bag, and assists also in sealing.

That end of the bag remote from the nozzle is usually supported from the handle 3, the handle having a depending flexible member or guard 22, provided at its free end with a ring 23. A hook 24 is connected with the bag remote from the neck, for engaging the ring, and preferably the bag is reinforced at the connection of the hook, by doubling back a portion of the tip or end of the bag on the body as indicated at 25. This doubled portion is stitched in place as shown, and it not only prevents tearing out of the hook, but prevents also tearing of the bag. h

In use, t e bag is placed, by first slip on the band, after which the neck of the b is engaged with the nozzle outside of the band. The fastening means or clamp may be placed before or after the neck of the bag is engaged with the nozzle, and the rubber band is so arranged that the wire of the clamp clasps the same. After the clamp is tightened and the hook ring 23, the cleaner may be used in the usual manner. The internal pressure distends the bag, which because of the direction of the corrugations may expand circumferentially along natural lines, without any kinking, snarling or twisting. After the bag is fille it is removed and replaced by a new bag.

The paper from which the bag is made is a relatively heavy crepe paper, with the corrugations or crinkles running in the same direction. These corrugations impart to the bag a considerable resiliency, so that the bag may expand under the air pressure, and will resume its original shape when the pressure is removed. The bags may be made very cheaply, and each may be supplied with a clamp and a rubber band. It is obvious however that the rubber bands and the clamps might if desired be used with more than one bag.

I claim:

1. A bag for vacuum cleaners and the like, having a restricted neck or inlet, said bag of crepe paper arranged with the corrugations thereof substantially parallel with the axis of the neck, A

24 engaged with the 2. Abag for vacuum cleaners and the like folded at the hook, the folds stitched tohaving a. restricted neck, and composed oi gether and to the bag. paper, said bag of two similar pieces super- Signed at New York, in the county of- 10 imposed, the edges of the pieces turned over New York'a-nd State of New York, this 10th 5 upon the body of one and stitched to both day of Dec., 1924, A. D.

pieces, the end of the bag remote from the neck provided with a hook and reversely ANNIE E. HALSTED. 

